package com.liu.activiti.utils;

import com.liu.activiti.pojo.User;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

import java.util.Objects;

/**
 * 安全服务工具类
 *
 * @author eline
 */
public class SecurityUtils {
    /**
     * 获取用户账户
     **/
    public static String getUserName() {
        try {
            return getUser().getUsername();
        } catch (Exception e) {
            return null;
        }
    }

    /**
     * 获取用户昵称
     **/
    public static String getNickName() {
        try {
            return getUser().getUsername();
        } catch (Exception e) {
            return null;
        }
    }

    /**
     * 获取用户账户
     **/
    public static Long getUserId() {
        try {
            return Objects.requireNonNull(getUser()).getId();
        } catch (Exception e) {
            return null;
        }
    }

    /**
     * 获取用户
     **/
    public static User getUser() {
        try {
            return (User)getAuthentication().getPrincipal();
        } catch (Exception e) {
            return null;
        }
    }

    /**
     * 获取Authentication
     */
    public static Authentication getAuthentication() {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }


    /**
     * 判断密码是否相同
     *
     * @param rawPassword     真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 是否为管理员
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(String userId) {
        return userId != null && "00000000-0000-0000-0000-000000000000".equals(userId);
    }
}

